github-starred/ultimatepp
2
0
Fork 0
mirror of https://github.com/ultimatepp/ultimatepp.git synced 2026-06-12 06:12:59 -06:00
Code Issues 33 Projects Packages Wiki Activity Actions
ultimatepp/bazaar/Surface/Surface.cpp
koldo 319f15afaa Surface: Basic 3D primitives and its handling 
git-svn-id: svn://ultimatepp.org/upp/trunk@14669 f0d560ea-af0d-0410-9eb7-867de7ffcac7
2020-07-08 17:33:48 +00:00

1616 lines
No EOL
45 KiB
C++
Raw Blame History

#include <Core/Core.h>
#include <plugin/Eigen/Eigen.h>
#include <Surface/Surface.h>
#include <Geom/Geom.h>
#include <Functions4U/Functions4U.h>
namespace Upp {
using namespace Eigen;
Point3D GetCentroid(const Point3D &a, const Point3D &b) {
return Point3D(avg(a.x, b.x), avg(a.y, b.y), avg(a.z, b.z));
}
Point3D GetCentroid(const Point3D &a, const Point3D &b, const Point3D &c) {
return Point3D(avg(a.x, b.x,c.x), avg(a.y, b.y, c.y), avg(a.z, b.z, c.z));
}
Vector3D GetNormal(const Point3D &a, const Point3D &b, const Point3D &c) {
return Vector3D((a - b) % (b - c)).Normalize();
}
Point3D Intersection(const Vector3D &lineVector, const Point3D &linePoint, const Point3D &planePoint, const Vector3D &planeNormal) {
Vector3D diff = planePoint - linePoint;
double prod1 = diff.dot(planeNormal);
double prod2 = lineVector.dot(planeNormal);
if (abs(prod2) < EPS)
return Null;
double factor = prod1/prod2;
return linePoint + lineVector*factor;
}
void Point3D::Translate(double dx, double dy, double dz) {
x += dx;
y += dy;
z += dz;
}
void Point3D::Rotate(double da_x, double da_y, double da_z, double c_x, double c_y, double c_z) {
Affine3d aff;
GetTransform(aff, da_x, da_y, da_z, c_x, c_y, c_z);
Rotate(aff);
}
void Point3D::Rotate(const Affine3d &quat) {
Vector3d pnt0(x, y, z);
Vector3d pnt = quat * pnt0;
x = pnt[0];
y = pnt[1];
z = pnt[2];
}
void GetTransform(Affine3d &aff, double a_x, double a_y, double a_z, double c_x, double c_y, double c_z) {
Vector3d c(c_x, c_y, c_z);
aff = Translation3d(c) *
AngleAxisd(a_x*M_PI/180, Vector3d::UnitX()) *
AngleAxisd(a_y*M_PI/180, Vector3d::UnitY()) *
AngleAxisd(a_z*M_PI/180, Vector3d::UnitZ()) *
Translation3d(-c);
}
Point3D Segment3D::IntersectionPlaneX(double x) {
if (from.x >= x && to.x >= x)
return Point3D(true);
if (from.x <= x && to.x <= x)
return Point3D(false);
double factor = (x - from.x)/(to.x - from.x);
return Point3D(x, from.y + (to.y - from.y)*factor, from.z + (to.z - from.z)*factor);
}
Point3D Segment3D::IntersectionPlaneY(double y) {
if (from.y >= y && to.y >= y)
return Point3D(true);
if (from.y <= y && to.y <= y)
return Point3D(false);
double factor = (y - from.y)/(to.y - from.y);
return Point3D(from.x + (to.x - from.x)*factor, y, from.z + (to.z - from.z)*factor);
}
Point3D Segment3D::IntersectionPlaneZ(double z) {
if (from.z >= z && to.z >= z)
return Point3D(true);
if (from.z <= z && to.z <= z)
return Point3D(false);
double factor = (z - from.z)/(to.z - from.z);
return Point3D(from.x + (to.x - from.x)*factor, from.y + (to.y - from.y)*factor, z);
}
Point3D Segment3D::Intersection(const Point3D &planePoint, const Vector3D &planeNormal) {
Vector3D vector = Vector();
Vector3D diff = planePoint - from;
double prod1 = diff.dot(planeNormal);
double prod2 = vector.dot(planeNormal);
if (abs(prod2) < EPS)
return Null;
double factor = prod1/prod2;
if (factor >= 1)
return Point3D(true);
if (factor <= 0)
return Point3D(false);
return from + vector*factor;
}
bool Segment3D::PointIn(const Point3D &p) const {
return PointInSegment(p, *this);
}
bool Segment3D::SegmentIn(const Segment3D &in) const {
return SegmentInSegment(in, *this);
}
bool Segment3D::SegmentIn(const Segment3D &in, double in_len) const {
return SegmentInSegment(in, in_len, *this);
}
bool PointInSegment(const Point3D &p, const Segment3D &seg) {
double dpa = p.Distance(seg.from);
double dpb = p.Distance(seg.to);
double dab = seg.Length();
return abs(dpa + dpb - dab) < EPS;
}
bool SegmentInSegment(const Segment3D &in, double in_len, const Segment3D &seg) {
double seg_len = seg.Length();
double seg_from_in_from = seg.from.Distance(in.from);
double in_to_seg_to = in.to.Distance(seg.to);
if (abs(seg_from_in_from + in_len + in_to_seg_to - seg_len) < EPS)
return true;
double seg_from_in_to = seg.from.Distance(in.to);
double in_from_seg_to = in.from.Distance(seg.to);
if (abs(seg_from_in_to + in_len + in_from_seg_to - seg_len) < EPS)
return true;
return false;
}
bool SegmentInSegment(const Segment3D &in, const Segment3D &seg) {
return SegmentInSegment(in, in.Length(), seg);
}
void Surface::Clear() {
nodes.Clear();
panels.Clear();
skewed.Clear();
segWaterlevel.Clear();
segTo1panel.Clear();
segTo3panel.Clear();
segments.Clear();
//x = y = z = a_x = a_y = a_z = 0;
selPanels.Clear();
selNodes.Clear();
}
Surface::Surface(const Surface &orig, int) {
healing = orig.healing;
numTriangles = orig.numTriangles;
numBiQuads = orig.numBiQuads;
numMonoQuads = orig.numMonoQuads;
panels = clone(orig.panels);
nodes = clone(orig.nodes);
skewed = clone(orig.skewed);
segWaterlevel = clone(orig.segWaterlevel);
segTo1panel = clone(orig.segTo1panel);
segTo3panel = clone(orig.segTo3panel);
segments = clone(orig.segments);
env = clone(orig.env);
surface = orig.surface;
volume = orig.volume;
volumex = orig.volumex;
volumey = orig.volumey;
volumez = orig.volumez;
}
bool Surface::IsEmpty() {
return nodes.IsEmpty();
}
int Surface::FixSkewed() {
int num = 0;
for (int i = 0; i < panels.GetCount(); ++i) {
int &id0 = panels[i].id[0];
int &id1 = panels[i].id[1];
int &id2 = panels[i].id[2];
int &id3 = panels[i].id[3];
Point3D &p0 = nodes[id0];
Point3D &p1 = nodes[id1];
Point3D &p2 = nodes[id2];
Point3D &p3 = nodes[id3];
if (id0 != id3) { // Is not triangular
Vector3D normal301 = GetNormal(p3, p0, p1);
Vector3D normal012 = GetNormal(p0, p1, p2);
Vector3D normal123 = GetNormal(p1, p2, p3);
Vector3D normal230 = GetNormal(p2, p3, p0);
double d0 = normal301.Manhattan();
double d01 = normal301.Manhattan(normal012);
double d02 = normal301.Manhattan(normal123);
double d03 = normal301.Manhattan(normal230);
int numg = 0;
if (d0 < d01)
numg++;
if (d0 < d02)
numg++;
if (d0 < d03)
numg++;
if (numg > 1) {
skewed << Segment3D(p0, p1) << Segment3D(p1, p2) << Segment3D(p2, p3) << Segment3D(p3, p0);
if (d0 < d01)
Swap(panels[i].id[1], panels[i].id[2]);
else if (d0 < d02)
Swap(panels[i].id[2], panels[i].id[3]);
num++;
}
}
}
return num;
}
void Surface::DetectTriBiP(int &numTri, int &numBi, int &numP) {
numTri = numBi = numP = 0;
for (int i = panels.GetCount()-1; i >= 0; --i) {
Panel &panel = panels[i];
Upp::Index<int> ids;
ids.FindAdd(panel.id[0]);
ids.FindAdd(panel.id[1]);
ids.FindAdd(panel.id[2]);
ids.FindAdd(panel.id[3]);
if (ids.GetCount() == 4)
;
else if (ids.GetCount() == 3) {
numTri++;
panel.id[0] = ids[0];
panel.id[1] = ids[1];
panel.id[2] = ids[2];
TriangleToQuad(i);
} else if (ids.GetCount() == 2) {
numBi++;
panels.Remove(i, 1);
} else {
numP++;
panels.Remove(i, 1);
}
}
}
void Surface::TriangleToQuad(Panel &pan) {
panels << pan;
TriangleToQuad(panels.GetCount() - 1);
}
void Surface::TriangleToQuad(int ipanel) {
Panel &pan00 = panels[ipanel];
int id0 = pan00.id[0];
int id1 = pan00.id[1];
int id2 = pan00.id[2];
Point3D &p0 = nodes[id0];
Point3D &p1 = nodes[id1];
Point3D &p2 = nodes[id2];
Point3D p012= GetCentroid(p0, p1, p2); nodes.Add(p012); int id012= nodes.GetCount()-1;
Point3D p01 = GetCentroid(p0, p1); nodes.Add(p01); int id01 = nodes.GetCount()-1;
Point3D p12 = GetCentroid(p1, p2); nodes.Add(p12); int id12 = nodes.GetCount()-1;
Point3D p20 = GetCentroid(p2, p0); nodes.Add(p20); int id20 = nodes.GetCount()-1;
panels.Remove(ipanel, 1);
Panel &pan0 = panels.Add(); pan0.id[0] = id0; pan0.id[1] = id01; pan0.id[2] = id012; pan0.id[3] = id20;
Panel &pan1 = panels.Add(); pan1.id[0] = id01; pan1.id[1] = id1; pan1.id[2] = id12; pan1.id[3] = id012;
Panel &pan2 = panels.Add(); pan2.id[0] = id012; pan2.id[1] = id12; pan2.id[2] = id2; pan2.id[3] = id20;
}
int Surface::RemoveDuplicatedPanels(Vector<Panel> &_panels) {
int num = 0;
for (int i = 0; i < _panels.GetCount()-1; ++i) {
Panel &panel = _panels[i];
for (int j = _panels.GetCount()-1; j >= i+1; --j) {
if (panel == _panels[j]) {
num++;
_panels.Remove(j, 1);
}
}
}
return num;
}
int Surface::RemoveTinyPanels(Vector<Panel> &_panels) {
int num = 0;
double avgsurface = 0;
for (int i = 0; i < _panels.GetCount(); ++i)
avgsurface += _panels[i].surface0 + _panels[i].surface1;
avgsurface /= _panels.GetCount();
double tiny = avgsurface/1000000;
for (int i = _panels.GetCount()-1; i >= 0; --i) {
double surface = _panels[i].surface0 + _panels[i].surface1;
if (surface < tiny) {
num++;
_panels.Remove(i, 1);
}
}
return num;
}
int Surface::RemoveDuplicatedPointsAndRenumber(Vector<Panel> &_panels, Vector<Point3D> &_nodes) {
int num = 0;
// Detect duplicated points in nodes
double similThres = 0.001;
Upp::Index<int> duplic, goods;
for (int i = 0; i < _nodes.GetCount()-1; ++i) {
if (duplic.Find(i) >= 0)
continue;
for (int j = i+1; j < _nodes.GetCount(); ++j) {
if (_nodes[i].IsSimilar(_nodes[j], similThres)) {
duplic << j;
goods << i;
num++;
}
}
}
// Replace duplicated points with good ones in panels
for (int i = 0; i < _panels.GetCount(); ++i) {
for (int j = 0; j < 4; ++j) {
int &id = _panels[i].id[j];
int pos = duplic.Find(id);
if (pos >= 0)
id = goods[pos];
}
}
// Find unused nodes
Vector<int> newId;
newId.SetCount(_nodes.GetCount());
int avId = 0;
for (int i = 0; i < _nodes.GetCount(); ++i) {
bool found = false;
for (int ip = 0; ip < _panels.GetCount() && !found; ++ip) {
int numP = PanelGetNumNodes(_panels, ip);
for (int j = 0; j < numP; ++j) {
if (_panels[ip].id[j] == i) {
found = true;
break;
}
}
}
if (!found)
newId[i] = Null; // Remove unused nodes
else if (duplic.Find(i) >= 0)
newId[i] = Null;
else {
newId[i] = avId;
avId++;
}
}
// Remove duplicated nodes
for (int i = _nodes.GetCount()-1; i >= 0; --i) {
if (IsNull(newId[i]))
_nodes.Remove(i, 1);
}
// Renumber panels
for (int i = 0; i < _panels.GetCount(); ++i) {
for (int j = 0; j < 4; ++j) {
int& id = _panels[i].id[j];
id = newId[id];
}
}
return num;
}
void Surface::AddSegment(int inode0, int inode1, int ipanel) {
ASSERT(!IsNull(inode0));
ASSERT(!IsNull(inode1));
for (int i = 0; i < segments.GetCount(); ++i) {
if ((segments[i].inode0 == inode0 && segments[i].inode1 == inode1) ||
(segments[i].inode1 == inode0 && segments[i].inode0 == inode1)) {
segments[i].panels << ipanel;
return;
}
}
Segment &sg = segments.Add();
sg.inode0 = inode0;
sg.inode1 = inode1;
sg.panels << ipanel;
}
int Surface::SegmentInSegments(int iseg) const {
Segment3D seg(nodes[segments[iseg].inode0], nodes[segments[iseg].inode1]);
double lenSeg = seg.Length();
for (int i = 0; i < segments.GetCount(); ++i) {
if (i != iseg) {
const Segment &segment = segments[i];
Segment3D is(nodes[segment.inode0], nodes[segment.inode1]);
if (is.SegmentIn(seg, lenSeg))
return i;
if (seg.SegmentIn(is))
return i;
}
}
return -1;
}
void Surface::GetSegments() {
segments.Clear();
for (int i = 0; i < panels.GetCount(); ++i) {
int id0 = panels[i].id[0];
int id1 = panels[i].id[1];
int id2 = panels[i].id[2];
int id3 = panels[i].id[3];
AddSegment(id0, id1, i);
AddSegment(id1, id2, i);
if (IsPanelTriangle(i))
AddSegment(id2, id0, i);
else {
AddSegment(id2, id3, i);
AddSegment(id3, id0, i);
}
}
}
void Surface::AnalyseSegments(double zTolerance) {
GetSegments();
for (int i = 0; i < segments.GetCount(); ++i) {
int inode0 = segments[i].inode0;
int inode1 = segments[i].inode1;
if (inode0 >= nodes.GetCount())
throw Exc(Format(t_("Node %d is pointing out of scope"), inode0+1));
if (inode1 >= nodes.GetCount())
throw Exc(Format(t_("Node %d is pointing out of scope"), inode1+1));
int num = segments[i].panels.GetCount();
if (num == 1) {
if (nodes[inode0].z >= zTolerance && nodes[inode1].z >= zTolerance)
segWaterlevel << Segment3D(nodes[inode0], nodes[inode1]);
else {
if (SegmentInSegments(i) < 0)
segTo1panel << Segment3D(nodes[inode0], nodes[inode1]);
}
} else if (num > 2)
segTo3panel << Segment3D(nodes[inode0], nodes[inode1]);
}
}
bool Surface::GetLowest(int &iLowSeg, int &iLowPanel) { // Get the lowest panel with normal non horizontal
iLowSeg = iLowPanel = Null;
double zLowSeg = DBL_MAX;
for (int i = 0; i < segments.GetCount(); ++i) {
const Segment &seg = segments[i];
if (seg.panels.GetCount() == 2) {
for (int ip = 0; ip < seg.panels.GetCount(); ++ip) {
if (panels[seg.panels[ip]].normal0.z != 0) {
double zz = max(nodes[seg.inode0].z, nodes[seg.inode1].z);
if (zz < zLowSeg) {
zLowSeg = zz;
iLowSeg = i;
iLowPanel = ip;
}
}
}
}
}
if (!IsNull(iLowSeg))
return true;
for (int i = 0; i < segments.GetCount(); ++i) {
const Segment &seg = segments[i];
if (seg.panels.GetCount() == 2) {
for (int ip = 0; ip < seg.panels.GetCount(); ++ip) {
double zz = min(nodes[seg.inode0].z, nodes[seg.inode1].z);
if (zz < zLowSeg) {
zLowSeg = zz;
iLowSeg = i;
iLowPanel = ip;
}
}
}
}
return !IsNull(iLowSeg);
}
bool Surface::ReorientPanels0(bool _side) {
numUnprocessed = -1;
int iLowSeg, iLowPanel;
if (!GetLowest(iLowSeg, iLowPanel))
return false;
// Reorient lowest panel downwards to be the seed
int ip = segments[iLowSeg].panels[iLowPanel];
if (panels[ip].normal0.z != 0) {
if (_side && panels[ip].normal0.z > 0 || !_side && panels[ip].normal0.z < 0)
ReorientPanel(ip);
} else if (panels[ip].normal0.x != 0) {
if (_side && panels[ip].normal0.x > 0 || !_side && panels[ip].normal0.x < 0)
ReorientPanel(ip);
} else {
if (_side && panels[ip].normal0.y > 0 || !_side && panels[ip].normal0.y < 0)
ReorientPanel(ip);
}
Vector<int> panelStack;
Upp::Index<int> panelProcessed;
panelStack << ip;
while (!panelStack.IsEmpty()) {
int id = panelStack.GetCount() - 1;
int ipp = panelStack[id];
panelStack.Remove(id, 1);
panelProcessed << ipp;
for (int is = 0; is < segments.GetCount(); ++is) {
const Upp::Index<int> &segPanels = segments[is].panels;
if (segPanels.Find(ipp) >= 0) {
for (int i = 0; i < segPanels.GetCount(); ++i) {
int ipadyac = segPanels[i];
if (ipadyac != ipp && panelProcessed.Find(ipadyac) < 0) {
panelStack << ipadyac;
if (!SameOrderPanel(ipp, ipadyac, segments[is].inode0, segments[is].inode1))
ReorientPanel(ipadyac);
}
}
}
}
}
numUnprocessed = panels.GetCount() - panelProcessed.GetCount();
return true;
}
Vector<Vector<int>> Surface::GetPanelSets(Function <void(String, int pos)> Status) {
Vector<Vector<int>> ret;
double zTolerance = -0.1;
AnalyseSegments(zTolerance);
Index<int> allPanels;
for (int i = 0; i < panels.GetCount(); ++i)
allPanels << i;
while (allPanels.GetCount() > 0) {
Vector<int> panelStack;
Upp::Index<int> panelProcessed;
panelStack << allPanels[0];
while (!panelStack.IsEmpty()) {
int id = panelStack.GetCount() - 1;
int ipp = panelStack[id];
panelStack.Remove(id, 1);
int iall = allPanels.Find(ipp);
if (iall < 0)
continue;
allPanels.Remove(iall);
panelProcessed << ipp;
for (int is = 0; is < segments.GetCount(); ++is) {
const Upp::Index<int> &segPanels = segments[is].panels;
if (segPanels.Find(ipp) >= 0) {
for (int i = 0; i < segPanels.GetCount(); ++i) {
int ipadyac = segPanels[i];
if (ipadyac != ipp && panelProcessed.Find(ipadyac) < 0)
panelStack << ipadyac;
}
}
}
}
ret << panelProcessed.PickKeys();
panelProcessed.Clear();
Status(Format(t_("Split mesh #%d"), ret.GetCount()), 0);
}
return ret;
}
void Surface::ReorientPanel(int ip) {
panels[ip].Swap();
panels[ip].normal0.Mirror();
if (panels[ip].IsTriangle())
panels[ip].normal1.Mirror();
}
bool Panel::FirstNodeIs0(int in0, int in1) const {
if (IsTriangle()) {
if ((id[0] == in0 && id[1] == in1) ||
(id[1] == in0 && id[2] == in1) ||
(id[2] == in0 && id[0] == in1))
return true;
else
return false;
} else {
if ((id[0] == in0 && id[1] == in1) ||
(id[1] == in0 && id[2] == in1) ||
(id[2] == in0 && id[3] == in1) ||
(id[3] == in0 && id[0] == in1))
return true;
else
return false;
}
}
void Panel::RedirectTriangles() {
int shift = 0;
if (id[0] == id[1])
shift = -1;
else if (id[1] == id[2])
shift = -2;
else if (id[2] == id[3])
shift = 1;
else
return;
ShiftNodes(shift);
}
void Panel::ShiftNodes(int shift) {
int id_0 = id[0];
int id_1 = id[1];
int id_2 = id[2];
int id_3 = id[3];
if (shift == 1) {
id[1] = id_0;
id[2] = id_1;
id[3] = id_2;
id[0] = id_3;
} else if (shift == -1) {
id[0] = id_1;
id[1] = id_2;
id[2] = id_3;
id[3] = id_0;
} else if (shift == -2) {
id[0] = id_2;
id[1] = id_3;
id[2] = id_0;
id[3] = id_1;
} else
throw t_("ShiftNodes value not implemented");
}
double Panel::GetSurface(const Point3D &p0, const Point3D &p1, const Point3D &p2) {
double l01 = p0.Distance(p1);
double l12 = p1.Distance(p2);
double l02 = p0.Distance(p2);
double s = (l01 + l12 + l02)/2;
return sqrt(max(s*(s - l01)*(s - l12)*(s - l02), 0.));
}
bool Surface::SameOrderPanel(int ip0, int ip1, int in0, int in1) {
bool first0in0 = panels[ip0].FirstNodeIs0(in0, in1);
bool first1in0 = panels[ip1].FirstNodeIs0(in0, in1);
return first0in0 != first1in0;
}
String Surface::Heal(bool basic, Function <void(String, int pos)> Status) {
String ret;
if (basic) {
Status(t_("Removing duplicated panels (pass 1)"), 25);
numDupPan = RemoveDuplicatedPanels(panels);
Status(t_("Removing duplicated points"), 50);
numDupP = RemoveDuplicatedPointsAndRenumber(panels, nodes);
if (numDupP > 0)
ret << "\n" << Format(t_("Removed %d duplicated points"), numDupP);
Status(t_("Removing duplicated panels (pass 2)"), 75);
numDupPan += RemoveDuplicatedPanels(panels); // Second time after duplicated points
if (numDupPan > 0)
ret << "\n" << Format(t_("Removed %d duplicated panels"), numDupPan);
} else {
Status(t_("Detecting triangles and wrong panels"), 40);
DetectTriBiP(numTriangles, numBiQuads, numMonoQuads);
if (numTriangles > 0)
ret << "\n" << Format(t_("Fixed %d triangles"), numTriangles);
if (numBiQuads > 0)
ret << "\n" << Format(t_("Removed %d 2 points quads"), numBiQuads);
if (numMonoQuads > 0)
ret << "\n" << Format(t_("Removed %d 1 points quads"), numMonoQuads);
Status(t_("Removing tiny panels"), 45);
RemoveTinyPanels(panels);
Status(t_("Removing duplicated panels (pass 1)"), 55);
numDupPan = RemoveDuplicatedPanels(panels);
Status(t_("Fixing skewed panels"), 60);
numSkewed = FixSkewed();
if (numSkewed > 0)
ret << "\n" << Format(t_("Fixed %d skewed panels"), numSkewed);
Status(t_("Removing duplicated points"), 65);
numDupP = RemoveDuplicatedPointsAndRenumber(panels, nodes);
if (numDupP > 0)
ret << "\n" << Format(t_("Removed %d duplicated points"), numDupP);
Status(t_("Removing duplicated panels (pass 2)"), 70);
numDupPan += RemoveDuplicatedPanels(panels); // Second time after duplicated points
if (numDupPan > 0)
ret << "\n" << Format(t_("Removed %d duplicated panels"), numDupPan);
Status(t_("Analysing water tightness"), 75);
double zTolerance = -0.1;
AnalyseSegments(zTolerance);
ret << "\n" << Format(t_("%d segments, %d water level, %d water leak and %d multipanel"),
segments.GetCount(), segWaterlevel.GetCount(),
segTo1panel.GetCount(), segTo3panel.GetCount());
Status(t_("Reorienting panels water side"), 80);
if (!ReorientPanels0(true))
ret << "\n" << t_("Failed to reorient panels to water side");
else if (numUnprocessed > 0)
ret << "\n" << Format(t_("%d panels not reoriented. Body contains separated surfaces"), numUnprocessed);
healing = true;
}
return ret;
}
void Surface::Orient() {
GetSegments();
ReorientPanels0(side);
side = !side;
}
void Surface::Image(int axis) {
for (int i = 0; i < nodes.GetCount(); ++i) {
Point3D &node = nodes[i];
if (axis == 0)
node.x = -node.x;
else if (axis == 1)
node.y = -node.y;
else
node.z = -node.z;
}
for (int i = 0; i < panels.GetCount(); ++i)
ReorientPanel(i);
}
void Surface::GetLimits() {
env.maxX = env.maxY = env.maxZ = -DBL_MAX;
env.minX = env.minY = env.minZ = DBL_MAX;
for (int i = 0; i < nodes.GetCount(); ++i) {
env.maxX = max(env.maxX, nodes[i].x);
env.minX = min(env.minX, nodes[i].x);
env.maxY = max(env.maxY, nodes[i].y);
env.minY = min(env.minY, nodes[i].y);
env.maxZ = max(env.maxZ, nodes[i].z);
env.minZ = min(env.minZ, nodes[i].z);
}
}
void Surface::GetPanelParams(Panel &panel) const {
panel.RedirectTriangles();
const Point3D &p0 = nodes[panel.id[0]];
const Point3D &p1 = nodes[panel.id[1]];
const Point3D &p2 = nodes[panel.id[2]];
const Point3D &p3 = nodes[panel.id[3]];
panel.surface0 = panel.GetSurface(p0, p1, p2);
panel.centroid0 = GetCentroid(p0, p1, p2);
panel.normal0 = GetNormal(p0, p1, p2);
if (!panel.IsTriangle()) {
panel.surface1 = panel.GetSurface(p2, p3, p0);
panel.centroid1 = GetCentroid(p2, p3, p0);
panel.normal1 = GetNormal(p2, p3, p0);
double surf = panel.surface0 + panel.surface1;
panel.centroidPaint.x = (panel.centroid0.x*panel.surface0 + panel.centroid1.x*panel.surface1)/surf;
panel.centroidPaint.y = (panel.centroid0.y*panel.surface0 + panel.centroid1.y*panel.surface1)/surf;
panel.centroidPaint.z = (panel.centroid0.z*panel.surface0 + panel.centroid1.z*panel.surface1)/surf;
panel.normalPaint.x = (panel.normal0.x*panel.surface0 + panel.normal1.x*panel.surface1)/surf;
panel.normalPaint.y = (panel.normal0.y*panel.surface0 + panel.normal1.y*panel.surface1)/surf;
panel.normalPaint.z = (panel.normal0.z*panel.surface0 + panel.normal1.z*panel.surface1)/surf;
panel.normalPaint.Normalize();
} else {
panel.surface1 = 0;
panel.centroidPaint = panel.centroid1 = panel.centroid0;
panel.normalPaint = panel.normal1 = panel.normal0;
}
}
String Surface::CheckErrors() const {
for (int ip = 0; ip < panels.GetCount(); ++ip) {
const Panel &panel = panels[ip];
for (int i = 0; i < 4; ++i) {
if (panel.id[i] >= nodes.GetCount())
return Format(t_("Node %d in panel %d [%d] does not exist"), panel.id[i]+1, ip+1, i+1);
}
}
return Null;
}
void Surface::GetPanelParams() {
for (int ip = 0; ip < panels.GetCount(); ++ip) {
Panel &panel = panels[ip];
GetPanelParams(panel);
}
}
void Surface::GetSurface() {
surface = 0;
for (int ip = 0; ip < panels.GetCount(); ++ip)
surface += panels[ip].surface0 + panels[ip].surface1;
avgFacetSideLen = sqrt(surface/panels.GetCount());
}
double Surface::GetWaterPlaneArea() {
double area = 0;
for (int ip = 0; ip < panels.GetCount(); ++ip) {
Panel &panel = panels[ip];
area += -(panel.surface0*panel.normal0.z + panel.surface1*panel.normal1.z);
}
return area;
}
void Surface::GetVolume() {
volumex = volumey = volumez = 0;
for (int ip = 0; ip < panels.GetCount(); ++ip) {
const Panel &panel = panels[ip];
volumex += panel.surface0*panel.normal0.x*panel.centroid0.x;
volumey += panel.surface0*panel.normal0.y*panel.centroid0.y;
volumez += panel.surface0*panel.normal0.z*panel.centroid0.z;
if (!panel.IsTriangle()) {
volumex += panel.surface1*panel.normal1.x*panel.centroid1.x;
volumey += panel.surface1*panel.normal1.y*panel.centroid1.y;
volumez += panel.surface1*panel.normal1.z*panel.centroid1.z;
}
}
volume = avg(volumex, volumey, volumez);
}
Point3D Surface::GetCenterOfBuoyancy() {
double xb = 0, yb = 0, zb = 0;
for (int ip = 0; ip < panels.GetCount(); ++ip) {
const Panel &panel = panels[ip];
xb += panel.surface0*panel.normal0.x*sqr(panel.centroid0.x);
yb += panel.surface0*panel.normal0.y*sqr(panel.centroid0.y);
zb += panel.surface0*panel.normal0.z*sqr(panel.centroid0.z);
if (!panel.IsTriangle()) {
xb += panel.surface1*panel.normal1.x*sqr(panel.centroid1.x);
yb += panel.surface1*panel.normal1.y*sqr(panel.centroid1.y);
zb += panel.surface1*panel.normal1.z*sqr(panel.centroid1.z);
}
}
xb /= 2*volumex;
yb /= 2*volumey;
zb /= 2*volumez;
return Point3D(xb, yb, zb);
}
// Hydrostatic restoring is only expected from heave, roll and pitch
void Surface::GetHydrostaticStiffness(MatrixXd &c, const Point3D &cb, double rho,
const Point3D &cg, double mass, double g) {
c.setConstant(6, 6, 0);
if (volume < 0.00001)
return;
if (IsNull(mass))
mass = rho*volume;
for (int ip = 0; ip < panels.GetCount(); ++ip) {
const Panel &panel = panels[ip];
double momentz0 = panel.normal0.z*panel.surface0;
double momentz1 = panel.normal1.z*panel.surface1;
double x0 = panel.centroid0.x;
double y0 = panel.centroid0.y;
double x1 = panel.centroid1.x;
double y1 = panel.centroid1.y;
c(2, 2) -= (momentz0 + momentz1);
c(2, 3) -= (y0*momentz0 + y1*momentz1);
c(2, 4) += (x0*momentz0 + x1*momentz1);
c(3, 3) -= (y0*y0*momentz0 + y1*y1*momentz1);
c(3, 4) += (x0*y0*momentz0 + x1*y1*momentz1);
c(4, 4) -= (x0*x0*momentz0 + x1*x1*momentz1);
}
double rho_g = rho*g;
c(2, 2) = c(2, 2)*rho_g;
c(2, 3) = c(2, 3)*rho_g;
c(2, 4) = c(2, 4)*rho_g;
c(3, 4) = c(3, 4)*rho_g;
c(3, 3) = (c(3, 3) + volumez*cb.z)*rho_g - mass*g*cg.z;
c(4, 4) = (c(4, 4) + volumez*cb.z)*rho_g - mass*g*cg.z;
if (abs(cb.x) > 0.001)
c(3, 5) -= rho_g*volume*cb.x;
if (abs(cg.x) > 0.001)
c(3, 5) += mass*g*cg.x;
if (abs(cb.x) > 0.001)
c(4, 5) -= rho_g*volume*cb.y;
if (abs(cg.x) > 0.001)
c(4, 5) += mass*g*cg.y;
c(3, 2) = c(2, 3);
c(4, 2) = c(2, 4);
c(4, 3) = c(3, 4);
}
inline static void AddSegZero(Vector<Segment3D> &seg, const Point3D &p0, const Point3D &p1,
const Point3D &p2, const Point3D &p3) {
if (abs(p0.z - 0) <= 0.01 && abs(p1.z - 0) <= 0.01)
seg << Segment3D(p0, p1);
if (abs(p1.z - 0) <= 0.01 && abs(p2.z - 0) <= 0.01)
seg << Segment3D(p1, p2);
if (abs(p2.z - 0) <= 0.01 && abs(p3.z - 0) <= 0.01)
seg << Segment3D(p2, p3);
if (abs(p3.z - 0) <= 0.01 && abs(p0.z - 0) <= 0.01)
seg << Segment3D(p3, p0);
}
void Surface::CutZ(const Surface &orig, double factor) {
nodes = clone(orig.nodes);
panels.Clear();
segWaterlevel.Clear();
factor *= -1;
for (int ip = 0; ip < orig.panels.GetCount(); ++ip) {
const int &id0 = orig.panels[ip].id[0];
const int &id1 = orig.panels[ip].id[1];
const int &id2 = orig.panels[ip].id[2];
const int &id3 = orig.panels[ip].id[3];
const Point3D &p0 = nodes[id0];
const Point3D &p1 = nodes[id1];
const Point3D &p2 = nodes[id2];
const Point3D &p3 = nodes[id3];
if ((p0.z)*factor >= 0 && (p1.z)*factor >= 0 && (p2.z)*factor >= 0 && (p3.z)*factor >= 0)
AddSegZero(segWaterlevel, p0, p1, p2, p3);
else if ((p0.z)*factor <= 0 && (p1.z)*factor <= 0 && (p2.z)*factor <= 0 && (p3.z)*factor <= 0) {
AddSegZero(segWaterlevel, p0, p1, p2, p3);
panels << Panel(orig.panels[ip]);
} else {
const int *origPanelid = orig.panels[ip].id;
Vector<int> nodeFrom, nodeTo;
Segment3D segWL;
segWL.from = segWL.to = Null;
const int ids[] = {0, 1, 2, 3, 0};
for (int i = 0; i < 4; ++i) {
if (origPanelid[ids[i]] == origPanelid[ids[i+1]])
;
else {
const Point3D &from = nodes[origPanelid[ids[i]]];
const Point3D &to = nodes[origPanelid[ids[i+1]]];
Segment3D seg(from, to);
if (abs(from.z) <= 0.01 && abs(to.z) <= 0.01) {
nodeFrom << origPanelid[ids[i]];
nodeTo << origPanelid[ids[i+1]];
segWL.from = from;
segWL.to = to;
} else if ((from.z)*factor <= 0 && (to.z)*factor <= 0) {
nodeFrom << origPanelid[ids[i]];
nodeTo << origPanelid[ids[i+1]];
} else if ((from.z)*factor >= 0 && (to.z)*factor >= 0)
;
else {
Point3D inter = seg.IntersectionPlaneZ(0);
if ((from.z)*factor < 0) {
nodeFrom << origPanelid[ids[i]];
nodes << inter;
nodeTo << nodes.GetCount() - 1;
} else {
nodeTo << origPanelid[ids[i+1]];
nodes << inter;
nodeFrom << nodes.GetCount() - 1;
}
if (IsNull(segWL.from))
segWL.from = inter;
else if (IsNull(segWL.to))
segWL.to = inter;
}
}
}
if (!IsNull(segWL))
segWaterlevel << segWL;
int pos = -1, nFrom, nTo;
for (int i = 0; i < nodeFrom.GetCount(); ++i) {
int i_1 = i + 1;
if (i_1 >= nodeFrom.GetCount())
i_1 = 0;
if (nodeTo[i] != nodeFrom[i_1]) {
pos = i+1;
nFrom = nodeTo[i];
nTo = nodeFrom[i_1];
break;
}
}
if (pos == nodeTo.GetCount()) {
nodeFrom << nFrom;
nodeTo << nTo;
} else if (pos >= 0) {
nodeFrom.Insert(pos, nFrom);
nodeTo.Insert(pos, nTo);
}
Panel panel;
if (nodeFrom.GetCount() == 3) {
panel.id[0] = nodeFrom[0];
panel.id[1] = nodeFrom[1];
panel.id[2] = nodeFrom[2];
panel.id[3] = nodeFrom[2];
} else if (nodeFrom.GetCount() == 4) {
panel.id[0] = nodeFrom[0];
panel.id[1] = nodeFrom[1];
panel.id[2] = nodeFrom[2];
panel.id[3] = nodeFrom[3];
} else if (nodeFrom.GetCount() == 5) {
panel.id[0] = nodeFrom[0];
panel.id[1] = nodeFrom[1];
panel.id[2] = nodeFrom[2];
panel.id[3] = nodeFrom[3];
Panel panel2;
panel2.id[0] = nodeFrom[0];
panel2.id[1] = nodeFrom[3];
panel2.id[2] = nodeFrom[4];
panel2.id[3] = nodeFrom[4];
TriangleToQuad(panel2);
}
TriangleToQuad(panel);
}
}
}
void Surface::CutX(const Surface &orig, double factor) {
nodes = clone(orig.nodes);
panels.Clear();
factor *= -1;
for (int ip = 0; ip < orig.panels.GetCount(); ++ip) {
const int &id0 = orig.panels[ip].id[0];
const int &id1 = orig.panels[ip].id[1];
const int &id2 = orig.panels[ip].id[2];
const int &id3 = orig.panels[ip].id[3];
const Point3D &p0 = nodes[id0];
const Point3D &p1 = nodes[id1];
const Point3D &p2 = nodes[id2];
const Point3D &p3 = nodes[id3];
if ((p0.x)*factor >= 0 && (p1.x)*factor >= 0 && (p2.x)*factor >= 0 && (p3.x)*factor >= 0)
;
else if ((p0.x)*factor <= 0 && (p1.x)*factor <= 0 && (p2.x)*factor <= 0 && (p3.x)*factor <= 0)
panels << Panel(orig.panels[ip]);
else {
const int *origPanelid = orig.panels[ip].id;
Vector<int> nodeFrom, nodeTo;
const int ids[] = {0, 1, 2, 3, 0};
for (int i = 0; i < 4; ++i) {
if (origPanelid[ids[i]] == origPanelid[ids[i+1]])
;
else {
const Point3D &from = nodes[origPanelid[ids[i]]];
const Point3D &to = nodes[origPanelid[ids[i+1]]];
Segment3D seg(from, to);
if (abs(from.x) <= 0.01 && abs(to.x) <= 0.01) {
nodeFrom << origPanelid[ids[i]];
nodeTo << origPanelid[ids[i+1]];
} else if ((from.x)*factor <= 0 && (to.x)*factor <= 0) {
nodeFrom << origPanelid[ids[i]];
nodeTo << origPanelid[ids[i+1]];
} else if ((from.x)*factor >= 0 && (to.x)*factor >= 0)
;
else {
Point3D inter = seg.IntersectionPlaneZ(0);
if ((from.x)*factor < 0) {
nodeFrom << origPanelid[ids[i]];
nodes << inter;
nodeTo << nodes.GetCount() - 1;
} else {
nodeTo << origPanelid[ids[i+1]];
nodes << inter;
nodeFrom << nodes.GetCount() - 1;
}
}
}
}
int pos = -1, nFrom, nTo;
for (int i = 0; i < nodeFrom.GetCount(); ++i) {
int i_1 = i + 1;
if (i_1 >= nodeFrom.GetCount())
i_1 = 0;
if (nodeTo[i] != nodeFrom[i_1]) {
pos = i+1;
nFrom = nodeTo[i];
nTo = nodeFrom[i_1];
break;
}
}
if (pos == nodeTo.GetCount()) {
nodeFrom << nFrom;
nodeTo << nTo;
} else if (pos >= 0) {
nodeFrom.Insert(pos, nFrom);
nodeTo.Insert(pos, nTo);
}
Panel panel;
if (nodeFrom.GetCount() == 3) {
panel.id[0] = nodeFrom[0];
panel.id[1] = nodeFrom[1];
panel.id[2] = nodeFrom[2];
panel.id[3] = nodeFrom[2];
} else if (nodeFrom.GetCount() == 4) {
panel.id[0] = nodeFrom[0];
panel.id[1] = nodeFrom[1];
panel.id[2] = nodeFrom[2];
panel.id[3] = nodeFrom[3];
} else if (nodeFrom.GetCount() == 5) {
panel.id[0] = nodeFrom[0];
panel.id[1] = nodeFrom[1];
panel.id[2] = nodeFrom[2];
panel.id[3] = nodeFrom[3];
Panel panel2;
panel2.id[0] = nodeFrom[0];
panel2.id[1] = nodeFrom[3];
panel2.id[2] = nodeFrom[4];
panel2.id[3] = nodeFrom[4];
TriangleToQuad(panel2);
}
TriangleToQuad(panel);
}
}
}
void Surface::CutY(const Surface &orig, double factor) {
nodes = clone(orig.nodes);
panels.Clear();
factor *= -1;
for (int ip = 0; ip < orig.panels.GetCount(); ++ip) {
const int &id0 = orig.panels[ip].id[0];
const int &id1 = orig.panels[ip].id[1];
const int &id2 = orig.panels[ip].id[2];
const int &id3 = orig.panels[ip].id[3];
const Point3D &p0 = nodes[id0];
const Point3D &p1 = nodes[id1];
const Point3D &p2 = nodes[id2];
const Point3D &p3 = nodes[id3];
if ((p0.y)*factor >= 0 && (p1.y)*factor >= 0 && (p2.y)*factor >= 0 && (p3.y)*factor >= 0)
;
else if ((p0.y)*factor <= 0 && (p1.y)*factor <= 0 && (p2.y)*factor <= 0 && (p3.y)*factor <= 0)
panels << Panel(orig.panels[ip]);
else {
const int *origPanelid = orig.panels[ip].id;
Vector<int> nodeFrom, nodeTo;
const int ids[] = {0, 1, 2, 3, 0};
for (int i = 0; i < 4; ++i) {
if (origPanelid[ids[i]] == origPanelid[ids[i+1]])
;
else {
const Point3D &from = nodes[origPanelid[ids[i]]];
const Point3D &to = nodes[origPanelid[ids[i+1]]];
Segment3D seg(from, to);
if (abs(from.y) <= 0.01 && abs(to.y) <= 0.01) {
nodeFrom << origPanelid[ids[i]];
nodeTo << origPanelid[ids[i+1]];
} else if ((from.y)*factor <= 0 && (to.y)*factor <= 0) {
nodeFrom << origPanelid[ids[i]];
nodeTo << origPanelid[ids[i+1]];
} else if ((from.y)*factor >= 0 && (to.y)*factor >= 0)
;
else {
Point3D inter = seg.IntersectionPlaneZ(0);
if ((from.y)*factor < 0) {
nodeFrom << origPanelid[ids[i]];
nodes << inter;
nodeTo << nodes.GetCount() - 1;
} else {
nodeTo << origPanelid[ids[i+1]];
nodes << inter;
nodeFrom << nodes.GetCount() - 1;
}
}
}
}
int pos = -1, nFrom, nTo;
for (int i = 0; i < nodeFrom.GetCount(); ++i) {
int i_1 = i + 1;
if (i_1 >= nodeFrom.GetCount())
i_1 = 0;
if (nodeTo[i] != nodeFrom[i_1]) {
pos = i+1;
nFrom = nodeTo[i];
nTo = nodeFrom[i_1];
break;
}
}
if (pos == nodeTo.GetCount()) {
nodeFrom << nFrom;
nodeTo << nTo;
} else if (pos >= 0) {
nodeFrom.Insert(pos, nFrom);
nodeTo.Insert(pos, nTo);
}
Panel panel;
if (nodeFrom.GetCount() == 3) {
panel.id[0] = nodeFrom[0];
panel.id[1] = nodeFrom[1];
panel.id[2] = nodeFrom[2];
panel.id[3] = nodeFrom[2];
} else if (nodeFrom.GetCount() == 4) {
panel.id[0] = nodeFrom[0];
panel.id[1] = nodeFrom[1];
panel.id[2] = nodeFrom[2];
panel.id[3] = nodeFrom[3];
} else if (nodeFrom.GetCount() == 5) {
panel.id[0] = nodeFrom[0];
panel.id[1] = nodeFrom[1];
panel.id[2] = nodeFrom[2];
panel.id[3] = nodeFrom[3];
Panel panel2;
panel2.id[0] = nodeFrom[0];
panel2.id[1] = nodeFrom[3];
panel2.id[2] = nodeFrom[4];
panel2.id[3] = nodeFrom[4];
TriangleToQuad(panel2);
}
TriangleToQuad(panel);
}
}
}
void Surface::Join(const Surface &orig) {
int num = nodes.GetCount();
int numOrig = orig.nodes.GetCount();
nodes.SetCount(num + numOrig);
for (int i = 0; i < numOrig; ++i)
nodes[num+i] = orig.nodes[i];
int numPan = panels.GetCount();
int numPanOrig = orig.panels.GetCount();
panels.SetCount(numPan + numPanOrig);
for (int i = 0; i < numPanOrig; ++i) {
Panel &pan = panels[numPan+i];
const Panel &panOrig = orig.panels[i];
for (int ii = 0; ii < 4; ++ii)
pan.id[ii] = panOrig.id[ii] + num;
GetPanelParams(pan);
}
Surface::RemoveDuplicatedPanels(panels);
Surface::RemoveDuplicatedPointsAndRenumber(panels, nodes);
Surface::RemoveDuplicatedPanels(panels);
}
void Surface::Translate(double x, double y, double z) {
for (int i = 0; i < nodes.GetCount(); ++i)
nodes[i].Translate(x, y, z);
for (int i = 0; i < skewed.GetCount(); ++i)
skewed[i].Translate(x, y, z);
for (int i = 0; i < segTo1panel.GetCount(); ++i)
segTo1panel[i].Translate(x, y, z);
for (int i = 0; i < segTo3panel.GetCount(); ++i)
segTo3panel[i].Translate(x, y, z);
}
void Surface::Rotate(double a_x, double a_y, double a_z, double c_x, double c_y, double c_z) {
Affine3d quat;
GetTransform(quat, a_x, a_y, a_z, c_x, c_y, c_z);
for (int i = 0; i < nodes.GetCount(); ++i)
nodes[i].Rotate(quat);
for (int i = 0; i < skewed.GetCount(); ++i)
skewed[i].Rotate(quat);
for (int i = 0; i < segTo1panel.GetCount(); ++i)
segTo1panel[i].Rotate(quat);
for (int i = 0; i < segTo3panel.GetCount(); ++i)
segTo3panel[i].Rotate(quat);
}
void Surface::DeployXSymmetry() {
int nnodes = nodes.GetCount();
for (int i = 0; i < nnodes; ++i) {
Point3D &dest = nodes.Add();
const Point3D &orig = nodes[i];
dest.x = -orig.x;
dest.y = orig.y;
dest.z = orig.z;
}
int npanels = panels.GetCount();
for (int i = 0; i < npanels; ++i) {
Panel &dest = panels.Add();
const Panel &orig = panels[i];
dest.id[0] = orig.id[3] + nnodes;
dest.id[1] = orig.id[2] + nnodes;
dest.id[2] = orig.id[1] + nnodes;
dest.id[3] = orig.id[0] + nnodes;
}
}
void Surface::DeployYSymmetry() {
int nnodes = nodes.GetCount();
for (int i = 0; i < nnodes; ++i) {
Point3D &dest = nodes.Add();
const Point3D &orig = nodes[i];
dest.x = orig.x;
dest.y = -orig.y;
dest.z = orig.z;
}
int npanels = panels.GetCount();
for (int i = 0; i < npanels; ++i) {
Panel &dest = panels.Add();
const Panel &orig = panels[i];
dest.id[0] = orig.id[3] + nnodes;
dest.id[1] = orig.id[2] + nnodes;
dest.id[2] = orig.id[1] + nnodes;
dest.id[3] = orig.id[0] + nnodes;
}
}
void VolumeEnvelope::MixEnvelope(VolumeEnvelope &env) {
maxX = maxNotNull(env.maxX, maxX);
minX = minNotNull(env.minX, minX);
maxY = maxNotNull(env.maxY, maxY);
minY = minNotNull(env.minY, minY);
maxZ = maxNotNull(env.maxZ, maxZ);
minZ = minNotNull(env.minZ, minZ);
}
void Surface::AddNode(Point3D &p) {
double similThres = 0.001;
for (int i = 0; i < nodes.GetCount(); ++i) {
if (nodes[i].IsSimilar(p, similThres))
return;
}
nodes << p;
}
int Surface::FindNode(Point3D &p) {
for (int i = 0; i < nodes.GetCount(); ++i) {
if (nodes[i] == p)
return i;
}
return -1;
}
void Surface::AddFlatPanel(double lenX, double lenY, double panelWidth) {
int numX = int(round(lenX/panelWidth));
ASSERT(numX > 0);
double widthX = lenX/numX;
int numY = int(round(lenY/panelWidth));
ASSERT(numY > 0);
double widthY = lenY/numY;
Array<PanelPoints> pans;
pans.SetCount(numX*numY);
int n = 0;
for (int i = 0; i < numX; ++i) {
for (int j = 0; j < numY; ++j) {
pans[n].data[0].x = widthX*i; pans[n].data[0].y = widthY*j; pans[n].data[0].z = 0;
pans[n].data[1].x = widthX*(i+1); pans[n].data[1].y = widthY*j; pans[n].data[1].z = 0;
pans[n].data[2].x = widthX*(i+1); pans[n].data[2].y = widthY*(j+1); pans[n].data[2].z = 0;
pans[n].data[3].x = widthX*i; pans[n].data[3].y = widthY*(j+1); pans[n].data[3].z = 0;
n++;
}
}
SetPanelPoints(pans);
}
void Surface::AddRevolution(Vector<Pointf> &points, double panelWidth) {
if (points.GetCount() < 2)
throw Exc(t_("Point nimver has to be higher than 2"));
for (int i = points.GetCount()-2; i >= 0; --i) {
double len = sqrt(sqr(points[i].x-points[i+1].x) + sqr(points[i].y-points[i+1].y));
int num = int(round(len/panelWidth));
if (num > 1) {
double x0 = points[i].x;
double lenx = points[i+1].x - points[i].x;
double y0 = points[i].y;
double leny = points[i+1].y - points[i].y;
for (int in = num-1; in >= 1; --in) {
Pointf p(x0 + lenx*in/num, y0 + leny*in/num);
points.Insert(i+1, p);
}
}
}
double maxx = 0;
for (Pointf &p : points)
maxx = max(maxx, p.x);
int numSlices = int(round(2*M_PI*maxx/panelWidth));
if (Odd(numSlices))
numSlices++;
if (numSlices < 3)
throw Exc(t_("Panel width too small"));
//double angle = 2*M_PI/numSlices;
Array<PanelPoints> pans;
pans.SetCount(numSlices*(points.GetCount()-1));
int n = 0;
for (int i = 0; i < points.GetCount()-1; ++i) {
if (points[i].x == 0) {
for (int j = 0; j < numSlices; j += 2) {
pans[n].data[0].x = 0;
pans[n].data[0].y = 0;
pans[n].data[0].z = points[i].y;
pans[n].data[1].x = points[i+1].x*cos((2*M_PI*j)/numSlices);
pans[n].data[1].y = points[i+1].x*sin((2*M_PI*j)/numSlices);
pans[n].data[1].z = points[i+1].y;
pans[n].data[2].x = points[i+1].x*cos((2*M_PI*(j+1))/numSlices);
pans[n].data[2].y = points[i+1].x*sin((2*M_PI*(j+1))/numSlices);
pans[n].data[2].z = points[i+1].y;
pans[n].data[3].x = points[i+1].x*cos((2*M_PI*(j+2))/numSlices);
pans[n].data[3].y = points[i+1].x*sin((2*M_PI*(j+2))/numSlices);
pans[n].data[3].z = points[i+1].y;
n++;
}
} else if (points[i+1].x == 0) {
for (int j = 0; j < numSlices; j += 2) {
pans[n].data[0].x = points[i].x*cos((2*M_PI*j)/numSlices);
pans[n].data[0].y = points[i].x*sin((2*M_PI*j)/numSlices);
pans[n].data[0].z = points[i].y;
pans[n].data[1].x = points[i].x*cos((2*M_PI*(j+1))/numSlices);
pans[n].data[1].y = points[i].x*sin((2*M_PI*(j+1))/numSlices);
pans[n].data[1].z = points[i].y;
pans[n].data[2].x = points[i].x*cos((2*M_PI*(j+2))/numSlices);
pans[n].data[2].y = points[i].x*sin((2*M_PI*(j+2))/numSlices);
pans[n].data[2].z = points[i].y;
pans[n].data[3].x = 0;
pans[n].data[3].y = 0;
pans[n].data[3].z = points[i+1].y;
n++;
}
} else {
for (int j = 0; j < numSlices; ++j) {
pans[n].data[0].x = points[i].x*cos((2*M_PI*j)/numSlices);
pans[n].data[0].y = points[i].x*sin((2*M_PI*j)/numSlices);
pans[n].data[0].z = points[i].y;
pans[n].data[1].x = points[i].x*cos((2*M_PI*(j+1))/numSlices);
pans[n].data[1].y = points[i].x*sin((2*M_PI*(j+1))/numSlices);
pans[n].data[1].z = points[i].y;
pans[n].data[2].x = points[i+1].x*cos((2*M_PI*(j+1))/numSlices);
pans[n].data[2].y = points[i+1].x*sin((2*M_PI*(j+1))/numSlices);
pans[n].data[2].z = points[i+1].y;
pans[n].data[3].x = points[i+1].x*cos((2*M_PI*j)/numSlices);
pans[n].data[3].y = points[i+1].x*sin((2*M_PI*j)/numSlices);
pans[n].data[3].z = points[i+1].y;
n++;
}
}
}
pans.SetCount(n);
SetPanelPoints(pans);
}
void Surface::SetPanelPoints(Array<PanelPoints> &pans) {
for (int i = 0; i < pans.GetCount(); ++i) {
PanelPoints &pan = pans[i];
for (int j = 0; j < 4; ++j) {
Point3D p(pan.data[j].x, pan.data[j].y, pan.data[j].z);
AddNode(p);
}
}
for (int i = 0; i < pans.GetCount(); ++i) {
PanelPoints &pan = pans[i];
Panel &panel = panels.Add();
for (int j = 0; j < 4; ++j) {
Point3D p(pan.data[j].x, pan.data[j].y, pan.data[j].z);
int id = FindNode(p);
if (id < 0)
throw Exc("Node not found in SetPanelPoints()");
panel.id[j] = id;
}
}
}
void Surface::AddPolygonalPanel(Vector<Pointf> &bound, double panelWidth) {
ASSERT(bound.GetCount() >= 2);
bound << bound[0];
for (int i = bound.GetCount()-2; i >= 0; --i) {
double len = sqrt(sqr(bound[i].x-bound[i+1].x) + sqr(bound[i].y-bound[i+1].y));
int num = int(round(len/panelWidth));
if (num > 1) {
double x0 = bound[i].x;
double lenx = bound[i+1].x - bound[i].x;
double y0 = bound[i].y;
double leny = bound[i+1].y - bound[i].y;
for (int in = num-1; in >= 1; --in) {
Pointf p(x0 + lenx*in/num, y0 + leny*in/num);
bound.Insert(i+1, p);
}
}
}
bound.Remove(bound.GetCount()-1);
double avgx = 0, avgy = 0;
for (Pointf &p : bound) {
avgx += p.x;
avgy += p.y;
}
Pointf avgp(avgx/bound.GetCount(), avgy/bound.GetCount());
Upp::Array<Pointf> delp;
delp.SetCount(bound.GetCount());
for (int i = 0; i < bound.GetCount(); ++i)
delp[i] = bound[i];
delp << avgp;
Delaunay del;
while (true) {
del.Build(delp);
double avglen = 0, maxlen = 0;
int maxid, maxid3, num = 0;
for (int i = 0; i < del.GetCount(); ++i) {
const Delaunay::Triangle &tri = del[i];
if (tri[0] < 0 || tri[1] < 0 || tri[2] < 0)
continue;
double len;
len = sqrt(sqr(delp[tri[0]].x - delp[tri[1]].x) + sqr(delp[tri[0]].y - delp[tri[1]].y));
avglen += len; num++;
if (maxlen < len) {
maxlen = len; maxid = i; maxid3 = 0;
}
len = sqrt(sqr(delp[tri[1]].x - delp[tri[2]].x) + sqr(delp[tri[1]].y - delp[tri[2]].y));
avglen += len; num++;
if (maxlen < len) {
maxlen = len; maxid = i; maxid3 = 1;
}
len = sqrt(sqr(delp[tri[2]].x - delp[tri[0]].x) + sqr(delp[tri[2]].y - delp[tri[0]].y));
avglen += len; num++;
if (maxlen < len) {
maxlen = len; maxid = i; maxid3 = 2;
}
}
avglen /= num;
if (avglen < panelWidth)
break;
int maxid33 = maxid3 == 2 ? 0 : maxid3+1;
delp << Pointf(Avg(delp[del[maxid][maxid3]].x, delp[del[maxid][maxid33]].x), Avg(delp[del[maxid][maxid3]].y, delp[del[maxid][maxid33]].y));
}
Array<PanelPoints> pans;
for (int i = 0; i < del.GetCount(); ++i) {
const Delaunay::Triangle &tri = del[i];
if (tri[0] < 0 || tri[1] < 0 || tri[2] < 0)
continue;
PanelPoints &pan = pans.Add();
pan.data[0].x = delp[tri[0]].x; pan.data[0].y = delp[tri[0]].y; pan.data[0].z = 0;
pan.data[1].x = delp[tri[1]].x; pan.data[1].y = delp[tri[1]].y; pan.data[1].z = 0;
pan.data[2].x = delp[tri[2]].x; pan.data[2].y = delp[tri[2]].y; pan.data[2].z = 0;
pan.data[3].x = delp[tri[2]].x; pan.data[3].y = delp[tri[2]].y; pan.data[3].z = 0;
}
SetPanelPoints(pans);
}
}
Reference in a new issue View git blame Copy permalink